.dashboard-container {
    min-height: 100vh;
    background: #f5f7fa;
  }
  
  .header {
    background: white;
    padding: 0 24px;
    height: 64px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
    position: sticky;
    top: 0;
    z-index: 100;
  }
  
  .header-left .logo {
    margin: 0;
    color: #1890ff;
    font-size: 20px;
    font-weight: 600;
  }
  
  .header-right {
    display: flex;
    align-items: center;
    gap: 16px;
  }
  
  .admin-name {
    color: #666;
    font-size: 14px;
  }
  
  .logout-btn {
    background: #ff4d4f;
    color: white;
    border: none;
    padding: 8px 16px;
    border-radius: 6px;
    cursor: pointer;
    font-size: 14px;
    transition: background 0.3s ease;
  }
  
  .logout-btn:hover {
    background: #ff7875;
  }
  
  .main-content {
    display: flex;
    min-height: calc(100vh - 64px);
  }
  
  .sidebar {
    width: 240px;
    background: white;
    box-shadow: 2px 0 8px rgba(0, 0, 0, 0.1);
  }
  
  .nav-menu {
    padding: 16px 0;
  }
  
  .menu-item {
    display: flex;
    align-items: center;
    padding: 12px 24px;
    cursor: pointer;
    transition: all 0.3s ease;
    border-left: 3px solid transparent;
  }
  
  .menu-item:hover {
    background: #f0f2f5;
  }
  
  .menu-item.active {
    background: #e6f7ff;
    border-left-color: #1890ff;
    color: #1890ff;
  }
  
  .menu-item .icon {
    margin-right: 12px;
    font-size: 16px;
  }
  
  .content {
    flex: 1;
    padding: 24px;
    overflow-y: auto;
  }
  
  .dashboard-overview h2 {
    margin: 0 0 24px 0;
    color: #262626;
    font-size: 24px;
    font-weight: 600;
  }
  
  .stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 24px;
    margin-bottom: 32px;
  }
  
  .stat-card {
    background: white;
    padding: 24px;
    border-radius: 12px;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
    display: flex;
    align-items: center;
    gap: 16px;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
  }
  
  .stat-card:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.15);
  }
  
  .stat-icon {
    font-size: 32px;
    width: 60px;
    height: 60px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: #f0f2f5;
    border-radius: 50%;
  }
  
  .stat-info h3 {
    margin: 0 0 8px 0;
    color: #666;
    font-size: 14px;
    font-weight: 500;
  }
  
  .stat-number {
    margin: 0 0 4px 0;
    color: #262626;
    font-size: 28px;
    font-weight: 600;
  }
  
  .stat-change {
    margin: 0;
    color: #1890ff;
    font-size: 12px;
  }
  
  .quick-actions {
    background: white;
    padding: 24px;
    border-radius: 12px;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
    margin-bottom: 32px;
  }
  
  .quick-actions h3 {
    margin: 0 0 16px 0;
    color: #262626;
    font-size: 18px;
    font-weight: 600;
  }
  
  .action-buttons {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 16px;
  }
  
  .action-btn {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 16px;
    background: #f8f9fa;
    border: 1px solid #e9ecef;
    border-radius: 8px;
    cursor: pointer;
    transition: all 0.3s ease;
    font-size: 14px;
  }
  
  .action-btn:hover {
    background: #e9ecef;
    border-color: #1890ff;
    color: #1890ff;
  }
  
  .data-table {
    background: white;
    padding: 24px;
    border-radius: 12px;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
  }
  
  .data-table h3 {
    margin: 0 0 20px 0;
    color: #262626;
    font-size: 18px;
    font-weight: 600;
  }
  
  .table-container {
    overflow-x: auto;
  }
  
  table {
    width: 100%;
    border-collapse: collapse;
  }
  
  th, td {
    padding: 12px 16px;
    text-align: left;
    border-bottom: 1px solid #f0f0f0;
  }
  
  th {
    background: #fafafa;
    color: #262626;
    font-weight: 600;
    font-size: 14px;
  }
  
  td {
    color: #666;
    font-size: 14px;
  }
  
  .no-data {
    text-align: center;
    color: #999;
    font-style: italic;
  }
  
  .loading-data {
    text-align: center;
    color: #1890ff;
    font-style: italic;
  }
  
  /* 响应式设计 */
  @media (max-width: 768px) {
    .main-content {
      flex-direction: column;
    }
  
    .sidebar {
      width: 100%;
      order: 2;
    }
  
    .content {
      order: 1;
    }
  
    .nav-menu {
      display: flex;
      overflow-x: auto;
      padding: 8px 16px;
    }
  
    .menu-item {
      white-space: nowrap;
      border-left: none;
      border-bottom: 3px solid transparent;
    }
  
    .menu-item.active {
      border-left: none;
      border-bottom-color: #1890ff;
    }
  }